User`s manual

User’s Manual 21
Table 1. RCM2200 Pinout Configurations
Pin Pin Name Default Use Alternate Use Notes
Header J4
1GND
2VCC
3 PC0 Output TXD
4 PC1 Input RXD
5 PC2 Output TXC
6 PC3 Input RXC
7 TPOUT–
Ethernet transmit port
8 TPOUT+
9LNK
Ethernet link (LNK)
LED indicator
10 PD3
Bitwise or parallel
programmable I/O
11 PD4 ATXB output
12 PD5 ARXB input
13 /IORD
Input (I/O read
strobe)
14 /IOWR
Output (I/O write
strobe)
15 PE0
Bitwise or parallel
programmable I/O
I0 control or INT0A
input
16 PE1
I1 control or INT1A
input
17 TPIN–
Ethernet receive port
18 TPIN+
19 PE4
Bitwise or parallel
programmable I/O
I4 control or INT0B
input
20 PE5
I5 control or INT1B
input
21 ACT
Ethernet active (ACT)
LED indicator
22 PE7
Bitwise or parallel
programmable I/O
I7 control or slave port
chip select /SCS
23–26 A[3:0] Rabbit 2000 address bus